#app{
    margin: 50px auto;
    width: 600px;
}
fieldset{
    border: 1px solid blue;
    margin-bottom: 20px;
}
fieldset input{
    width: 200px;
    height: 30px;
    margin: 10px 0;
}
table{
    width: 600px;
    border: 1px solid blue;
    text-align: center;
}
thead{
    background-color: blue;
    color: aliceblue;
}